Cita APA (7a ed.)

Williams, J. (1982). The origin of futures markets. [s.n.].

Cita Chicago Style (17a ed.)

Williams, Jeffrey. The Origin of Futures Markets. [S.l.]: [s.n.], 1982.

Cita MLA (9a ed.)

Williams, Jeffrey. The Origin of Futures Markets. [s.n.], 1982.